Weight challenges

I didn't realize how annoying it was going to be the 2nd time around waiting for my weight to just melt off like it did with Alex, esp since I only gained 27 lbs with Nico and 33 with Alex. (Now don't be mistaken, I had to work out to get back in shape but I was able to wear my pre-pregnancy pants by 6 weeks postpartum.) This time around, these last pesky 10 lbs just seem to have made themselves at home and don't want to leave. I still can't wear my pre-pregnancy pants, and nothing I seem to be doing is making the numbers on the scale go down. There are a few factors that I think are contributing:

1. The obvious: this is my 2nd child, and it might take a bit more work to shed the weight!
2. The c-section doesn't allow me to work out until the doctor has cleared me (8 wks in this case). 
3. I am nursing Nico and need to consume 500 calories so I can't exactly eat like a "skinny girl"
4. I am on a dairy restriction due to a sensitivity Nico has and thus I feel hungry quicker without my easy dairy filled and healthy snacks. *This is getting very annoying considering my already restricted diet due to food allergies
5. I have to drink 2 types of juice in limited quantities

I'm doing some things right.
1. I'm walking almost every day and trying to get some fun exercise in by playing with Alex like throwing the ball and chasing him outside when the heat allows.
2. I only have half of a soda a day and sweeten my coffee with agave nectar instead of sugar.
3. I am also eating lots of protein and drinking water with every meal
4. I've started simple and gentle exercises: pilates mostly

My endurance is very limited :( but I'm hopeful that it'll get better soon as long as I keep trying. I think I'll start posting side profile pictures of myself so that I can keep track of my progress by my appearance instead of the numbers on the scale. ADM!